Folding cardboard box



I E. e. GEREKE. v FOLDING CARDBOARD BOX. APPLICATION FILED DEC. 4, 1920-Patented July 5, 1921c.

a' folding" boxhaving a wall composed of a plurality ofroverlappedportions; one of which is cutaway sons to form af'space for receivingatongue that extends through an opening in anfa'djacent portion of thewall. Another object is to provide a "folding cardboard box ofnovelconstruction that'is equipped with a tongue" which can be in- Sertedin aslitin oneportionof the box and lockedinfposition'without the necessityof deforming said tongue 'oispreading said slit preparatory theinsertion of the tongue. gOjther objects and desirable features of myinvention will be hereinafter pointed out;

, I have herein 7 illustrated my invention embodied in afoldingcardboard box ofthe 3 0 held in overlappedrelation .by'a ilap onone of said portionsprovided'with a tongue that is"adapted" to "beinserted an opening formed in 'the portion ofthe end wall overwhicht'heflap l'aps'fbut I wish it to be understood'thatmy broad "ideais not limited to a box-ofjthe particular 'kind herein illustrated, but,on the contrary,is applicable to various kindin which each end wall "ofthe box is composedofa pluralityjof portions that are forms Y of foldingboxes thatqcoinprise a tongue that is adapted "to be POSllJlOIlGdfbG-tween parallel or overlapped-portions of the box. Y a

i Figure I of the drawingsisa perspective jviewof a folding-cardboardbox constructed in accordance with mypre'sent invention;

-Fig.-- '2 is a longitudinal, verticalsectiona view, taken onthe line 2--2 of Fig.1: e I {Referring-to the drawings which illustrate thepreferred form of invention, A designates thebottomfofja foldingcardboard 'box and B (designates the sides ofthe box. Each end wall ofthe 'box' 'is preferably formed} by three overlapped portions 1, 2

and 3 arranged in parallel relation, as shown i FOLDING onnnsonian iaox,

;A p iicationti d December 4,1920. Serial n6. 423,272.

, I specificationr te time. Pate t d J 5, 1921,

in Fig; 2, the portion "1 that formsthe outer side of the endwall' beingpreferably integral'ly connected to the bottom of the box, the portion 3that-forms the inner side of said end wall being integrally connected toone of'the sidesB and the intermediate portion 2 of said end wall beingintegrally connected to the other side B of thebox. The portion llOf tlle end wall has a fiap'ithat is adapted to be folded inwardly over theportion 3, and said flap 4 is provided with a tongue that is adapted tobe inserted through a horizontally-disposedslit'5 in the portion 3 andthen forced downwardly into an open space as formedlin'the intermediateportion 2 of the end wall. Said tongue is preferably provided with aheadportion 6 that is connectedby means of a neck or reduced portion to'thelower edge of the flap 4, thus forming horizontally-disposedshoulde'rs'8 at opposite sides of theneck 7 ofthe 'tongue'whichcooperate with parts 9 on the inner portion 3 offthe wall to lock saidtongue in" operative position and prevent accidental withdrawal of samefrom the slit 5 in the inner portion 3 of the endjwall,

Vertically-disposed slits 5 are formed in part of the end wall portion 3into an'intermedi ate section 10 and two'end sections 9,

which end sections 9 form the locking ele- 3 merits on the inner portion3 of the end wall that-prevent accidental withdrawal ofthe tongue on theflap 4. The head'portion. 6'

' of the tongueis of such width that it can be inserted in'thehorizontally-disposed slit 5 'without folding said'head portion ordeformingsame, and the open spaceor hole in in the intermediate portion2 of'the end wall the' portion 3 atthe upper sidef ofthehorizontally-disposed' slit 5 so as todivide' this is of such sizethat'it permitsthe part ofthe portion 3 located at the upperside of thehorizontal slit 5 to flexor spring outwardly 'into'said open space a:during the operation of inserting the tongue in the slit 5.

Insetting up the box the portions 1; 2am

'3 are arranged in overlapped relation; the flap 4 is then foldedinwardly over the p'ortion 3 and the tongue on, said flaplis theninserted in the slit 5 in the portion 3 and forced downwardly into the,open space 00'' in the intermediate portion EZ of the end Wall; Owing tothe fact that there is an open space (the hole a" the intermediate part2) 'atthe rear side of the section 10 of the inner portion 3 of the endwall, said section will yield or spring into the openspace when the headportion Got the tongue ex erts pressure on said section during theoperation of inserting the tongue. As the end portions of the head onthe tongue move downwardly over the parts 9 at the ends of the section10, said parts 9 will also yield or flex into the open space a duringthe clownward movement of the head on the tongue, but as soon as thehead of the tongue passes below the horizontal slit '5' inthe portion 3,

p the parts 9 will spring forwardly back toward their former position,thus securely looking the tongue, due, of course, to the fact that anyupward movement of the tongue is resisted by the shoulders 8 on thetongue coming in contact with the parts 9 n the inner portion 3 of theend wall. It Wlll thus be seen that with a box of the construction abovedescribed it is'not necessary either to deform the tongue oropen up theslit which receives the tongue by means of a spreading device,preparatory to inserting the tongue in said slit. On the'contrary, thepressure that the operators finger exerts on thetongue in guidin thetongue toward the slit 5, causes the section 10 at the upper side ofthe-said .slitto bend or flex into the open space an in the intermediateportion 2 sufficiently to causethe slit toopen automatically and receivethe end of the head 6 on the tongue. In-other words, with a box of theconstruction above described the natural movement of the o' erators finer in movin the head 6 of the tongue, downwardly; over the inner portion3 of the end wall causes the slit 5 to open automatically, therebypermitting the tongue to be moved into operative position andalso lockedby a single operation. V Having thus described myinvention, what I claimas new and desire tosecure by Let- Iters Patent is:

1. A box formed of cardboard or the like and having a wall composed of aplurality of overlapped portions, oneof which p ort1ons is provided withan opening through which a tongue is adapted to be inserted and theadjacent portion having an open space or hole for receiving said tongue.

2. A boxformed of cardboard orrthe like provided with a wall comprisinga plurality of overlapped portions, one of said portions having a slitthrough which a tongue is adapted to be inserted and the adjacentportion of the wall being provided with means which permits part of theslitted portion to yield or flex during the operation of inserting thetongue. r

3. A box formed of cardboard or the like and having a wall comprising aportion provided with an open space, a tongue that is adapted to beinserted in an opening in one face of said wall and positioned in saidopen drawal of saidtongue.

A. A box formed of cardboard or the like and provided with a wallcomposed of a plurality of overlapped portions, one of said portionshaving an opening and theadjacent portion being provided with an openspace, a tongue that is adapted to beinserted in said opening and thenforced through same into said open space, and parts on the portion ofthe wall in which said opening is formed that cooperate with parts onsaid tongue to prevent accidental withdrawal of the tongue. I v n 5. A"folding cardboard box provided with a wall composed of a plurality ofoverlapped portions, a retaining flap on one ofsaid portions providedwith a tongue that is adapted to be inserted in an opening one of theother portions of said walhand an open space or hole in an intermediateportion ofthe wall for receiving said tonguje when "it reaches its finalposition.

6. A folding cardboard box providedwith a wall composed of a pluralityof overlapped portions, a retaining flap on oneof said portions providedwith a tongue that is adapted to fbe inserted in an opening in oneof-the other portions of said wall, an

openspace or hole in an intermediate'portion of the wall for receivingsaid tongue when it reaches its final position, andcooperating meansonsaidtOngue and said wall for preventing accidental withdrawal of saidtongue,

7 A folding cardboard box provided with is formed-that cooperate withshoulders on said tongue to prevent vaccidental withdrawal of thetongue. A I r 8. A folding cardboard box having a wall composed of aplurality of overlapped portions, a flap on the outer portion ofthe wallthatlaps over the inner portion of the wall,

. atongue on said flap, the innerportion'of the wall having a slitthrough whichjsaid tongue can be inserted and the adjacent portlon ofthe wall having an open space which permits said slitted portion toflexorbend slightly during the operation of inserting, the tongue, lockingshoulders on said tongue, and parts onthe slitted portion of the wallthat cooperate with said shoulders, to ;.pre-

vent accidental withdrawal of; the tongue.

9. A folding cardboardbox provided with an end wall composed of threeoverlapped 7 tion of the wall havin portions, a flap on the outerportion that laps over the inner portion of the wall, a tongue on saidflap provided with a head, a neck portion and shoulders located at thesides of said neck-portion, the inner porposed slit through whlch thehead of the tongue is adapted to be inserted and a yielding section atthe upper side of said slit whose length corresponds approximately tothe width of the neck portion of the tongue, and the intermediateportion of the wall having an open space or hole for the purposedescribed.

10; A folding cardboard box having a wall composed of three overlappedportions, a

a horizontally-dis retaining flap on the outer portion of the wall thatlaps over the inner portion of the wall, a tongue on said flap, theinner portion of the wall having a slit through which said tongue isadapted to be inserted, cooperating locking means on said tongue and onthe intermediate portion of the wall for preventing accidentalwithdrawal of the tongue, and means in the intermediate portion of thewall which permits the part of the inner portion of the wall located atthe upper side of the slit therein to flex or bend out of its normalplane durlng the operation of inserting the tongue.

EDWARD G. GEREKE.

